KR102152430B1 - System and method for enhanced secuirity display of digital video file - Google Patents

Abstract

According to the present invention, a security-enhanced display method of a digital video files comprises: a step (a) of allowing a schedule and story preparing unit of an operator terminal to prepare a display schedule and story for a plurality of video files; a step (b) of allowing a control unit of the operator terminal to determine whether to apply security or not to the video files included in the display schedule and story prepared by the schedule and story preparing unit; a step (c) of allowing the control unit to apply security to the video files displayed with a high importance and in an important time zone among the plurality of video files; a step (d) of allowing the control unit to store the video files without security applied and the video files with security applied; a step (e) of allowing a communication interface unit of the operator terminal to transmit the video files without security applied and the video files with security applied to a display end at a remote place; a step (f) of allowing the communication interface unit to receive a feedback of the transmission results from the display end of the remote place; a step (g) of allowing the control unit to monitor the information feedbacked from the display unit, and determine whether there is a disorder or not; and a step (h) of allowing, when the security value of the feedbacked information is the same as the security value transmitted to the display end of the remote place and no disorder is found, the operator terminal to perform the steps of (b) and below repeatedly as a loop for the video files for which the display schedule and story are prepared. The present invention can prevent an accidental display of a video clip, which is not approved, to the general public.

Description

Digital video file security enhancement display system and method {SYSTEM AND METHOD FOR ENHANCED SECUIRITY DISPLAY OF DIGITAL VIDEO FILE}

The present invention relates to a display system and method for enhancing security of digital video files, and more particularly, in the configuration of editing, transmission, and display of a video, rather than network security or general configuration, it is simpler and more simple through a display controller at the lowest level. It relates to a display system and method for enhancing the security of digital video files that can enhance the security of the display of certain and perfect images.

In an effort to strengthen online security for the safety of various media contents and to prevent hacking on the network, the publicity and advertisement multimedia systems of unspecified citizens of general unspecified citizens' publicity and advertisements of unapproved videos leaked by hacking or irreversible due to errors of operating workers There is a problem leading to it.

Korean Patent Publication No. 10-0698275 (2007. 03. 15)

In order to solve the above-described problem, the present invention analyzes the sound source of the displayed image by analyzing the sound source of the displayed image by breaking away from the general home appliance and the standardized system that are displayed without separate authentication when a video cable such as a PC or a player is connected to a TV or monitor. An object of the present invention is to provide a display system and method for enhancing security of a digital video file for determining the presence or absence.

In order to achieve the above object, a method of displaying a digital video file for enhanced security according to the present invention includes the steps of: (a) creating a schedule and a story for a plurality of video files by a schedule and story creation unit of an operator terminal; (b) determining, by a control unit of the operator terminal, whether or not security is applied among video files included in the presentation schedule and story prepared by the schedule and story creation unit; (c) applying security to a video file displayed in an important and important time period among the plurality of video files; (d) the control unit storing a video file to which security is not applied and a video file to which security is applied; (e) transmitting, by a communication interface unit of the operating terminal, a video file to which security is not applied and a video file to which the security is applied to a display terminal at a remote location; (f) receiving, by the communication interface unit, a transmission result feedback from the remote display terminal; (g) determining, by the control unit, whether there is an abnormality by monitoring information fed back from the display end; And (h) if an abnormality is not found because the security value of the information to be fed back and the security value transmitted to the remote location are identical, It characterized in that it comprises a; repeating the step in a loop, and transmitting the status to the operator when the security value is different.

Preferably, step (e) of the display method for enhancing security of a digital video file according to the present invention for achieving the above-described object includes (e-1) a video file from the operator terminal to the display PC of the display control panel of the display terminal. Receiving; (e-2) performing, by the main controller of the display control panel, frequency sampling on the video file received in step (e-1); (e-3) reading, by the main controller, in the inaudible frequency band for the left and right channels of the sound source separated through frequency sampling in the step (e-2), which sound bands and how the sequence is temporally; (e-4) determining whether to display the main controller by comparing the inaudible frequency band and sequence read in step (e-3) with the initially set default value stored in the security key DB; And (e-5) the main controller determines that the video file can be displayed when the inaudible frequency band and sequence of the sound source read in step (e-3) do not exceed the specified inaudible frequency range and the number of repetitions, respectively. And expressing it to a media display unit through the display PC; It characterized in that it comprises a.

The security enhancement display method of a digital video file according to the present invention is implemented with a definition separate from the international IEEE standardization, such as hacking between remote operating software and a display control device delivered, and intentional operator mistakes. It has the effect of preventing accidents from being expressed to general unspecified citizens of unauthorized video.

In addition, the security-enhanced display method of digital video files according to the present invention is difficult for the public to check the security algorithm of the image, and it is composed of separate software and hardware to make hacking and technical access difficult, thereby preventing unauthorized images from being displayed without authentication. There is an effect that can be done.

In addition, the display method for enhanced security of digital video files according to the present invention is applied to a general commercial media system, publicity billboards for public offices, and media systems and billboards for displaying images for unspecified public, such as stadiums and airports. Can be prevented, the display error can be checked later with the expression log record, and the reliability of the operator can be secured.

1 is a diagram of a security enhanced display system for a digital video file according to the present invention.
2 is a flowchart of a method for enhancing security display of a digital video file according to the present invention.
3 is a diagram illustrating a screen in which a schedule and a story are created in an operator terminal of the display system for enhancing security of digital video files according to the present invention.
4 is a diagram for explaining a process of applying a non-audible frequency to an audible frequency in the security enhanced display system of a digital video file according to the present invention.
5 is a diagram for explaining frequency conversion of a sound source of a video file in the display system for enhancing security of a digital video file according to the present invention.
6 is a flowchart of a method of displaying a video file at a display end of a display system for enhancing security of a digital video file according to the present invention.
7 is a circuit diagram for separating and sampling a sound source in a security enhanced display system for a digital video file according to the present invention.
FIG. 8 is a diagram for explaining a method of determining whether to be displayed through code comparison between each channel of a sound source and a merge channel in the security enhanced display system of a digital video file according to the present invention.

The terms or words used in the specification and claims are not limited to their usual or dictionary meanings and should not be interpreted, and the inventor may appropriately define the concept of terms in order to describe his own invention in the best way. Based on the principle that there is, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention.

Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, so that they can be replaced at the time of application. It should be understood that there may be various equivalents and variations.

Hereinafter, a security enhanced display system for digital video files according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a display system for enhancing security of digital video files according to the present invention.

As shown in Fig. 1, the display system for enhancing security of digital video files according to the present invention includes a video file providing terminal 100, an operator terminal 200, a device connection hub 300, a display control panel 400, and a media display. Includes part 500.

The video file providing terminal 100 is a terminal corresponding to a PC, notebook, or tablet PC capable of playing video files, or a device such as a camera camcorder that generates a video file, and a TV or monitor through a video cable in addition to its own display unit. Video files can be played through an external display unit such as.

The operator terminal 200 schedules an image to be displayed through the security-enhanced display system of a digital video file according to the present invention, writes a story, determines whether or not security is applied, and applies security, the non-audible frequency that is not used above the audible frequency. Render and encode.

The terminal connection hub 300 is connected to a plurality of various types of video file providing terminals 100, or video files that the operator terminal 200 is connected to and received from the video file providing terminal 100 Create an expression schedule and story for and transmit it to the expression control panel 400 wirelessly.

The expression control panel 400 performs frequency sampling on the video file transmitted from the operator terminal 100 between the operator terminal 100 and the media display unit 500, and finally the media display unit 500 It is finally decided whether to express with ).

The media display unit 500 corresponds to a general commercial media system, a publicity billboard for public offices, a media system and a billboard for displaying images for unspecified general people such as stadiums and airports.

A method of displaying a digital video file using a security enhanced display system according to the present invention having the above-described configuration will be described with reference to FIG. 2.

First, the operator terminal 200 performs a step of creating an expression schedule and a story for a plurality of video files as shown in FIG. 3 (S100).

More specifically, the schedule and story creation unit 210 of the operator terminal 200 provides a list of a plurality of video files provided by the video file providing terminals 100 in step S100 by time, date, and day of the week. When it is to be expressed through the expression control panel 400 to the media display unit 500, an expression schedule and a story are prepared.

Next, the controller 220 of the operator terminal 200 performs a step of determining whether or not security is applied among the video files included in the presentation schedule and the story created by the schedule and story creation unit 210 (S200).

In the step S200, the controller 220 does not apply security to video files that are of low importance among the plurality of video files or that are not expressed in critical times, and videos that are of high importance or are expressed in critical times among the plurality of video files. A step of applying security to the file is performed (S300).

The importance may have a large degree of social impact when displayed after being edited or modified, and an important time period may be a time when many people watch a video displayed at a time when a corresponding video file is displayed.

In case of applying security, the controller 220 renders and encodes an unused non-audible frequency on an audible frequency corresponding to a sound source of an existing image.

More specifically, the control unit 220 starts at 2KHz when TIME 1 is within the frequency range of 0Hz to 20KHz as shown in FIG. 4, increases to 15KHz when TIME 2, and then increases to 16KHz when TIME 3, and then TIME 4 For the audible frequency that decreases to 4KHz when 1, the non-audible frequency is uniformly rendered and encoded at about 70KHz at a corresponding time within the range of 30KHz to 100KHz.

In FIG. 4, although it is illustrated as encoding a certain inaudible frequency, the present invention is not limited thereto, and encoding is possible even with a non-audible frequency band having a different size for each time period.

As described above, by rendering and encoding an unused non-audible frequency on the audible frequency corresponding to the sound source of the image in the step S3O, the extension (ReMix) of the security-applied video file is changed as shown in FIG. 5.

The controller 220 performs the step of storing a video file to which security is not applied and a video file to which security is applied (S400).

In step S400, it is preferable that the control unit 220 stores the conversion time and log information of the video file to which the security is applied, when the extension is changed, that is, what year, month, and day.

Thereafter, the communication interface unit 230 of the operation terminal 200 receives a video file to which security is not applied and the video file to which the security is applied from the control unit 220 and transmits the received video file to a remote display terminal through a wireless network. Performs (S500).

In the step S500, the communication interface unit 230 preferably transmits a security value, that is, a security code, to the video file to which the security is applied.

Meanwhile, encoding is performed with a certain sequence at the inaudible frequency, where the security value corresponds to a sequence encoded with the inaudible frequency band.

The communication interface unit 230 performs a step of receiving feedback of the transmission result from the remote display terminal (S600).

That is, whether the video file transmitted in step S500 is a security video file or an unapplied video file, a display image status is requested, and in the case of a security video file, a security value is requested to receive feedback.

In addition, the control unit 230 performs a step of monitoring the information fed back from the data display end or the display end (S700).

The control unit 230 determines whether there is an abnormality in the information fed back in the step S700 (S800), and if no abnormality is found because the security value of the information fed back is the same as the security value transmitted to the remote display terminal The terminal 200 repeats the steps after step S200 for the presentation schedule and the story-written video files, and if an abnormality is found because the information to be fed back is not the same as the security value transmitted to the remote location Performs the step of transmitting the state (S900).

At this time, the information fed back in step S900 is not the same as the security value transmitted to the remote location, or is not displayed according to the scheduled story. It is possible to stop the delivery of video images to the display end of.

On the other hand, in the step S500, the display end of the remote location receiving the video file to which security is not applied and the video file to which the security is applied from the communication interface unit 230 of the operation terminal 200 through a wireless network is shown in FIG. Express according to the procedure.

More specifically, the display unit is composed of an expression control panel 400 and a media display unit 500, and the display PC 410 of the display control panel 400 has security applied and the display date of a plurality of unapplied video files , Receiving a video file scheduled according to the day of the week and time and transmitted from the interface unit 230 of the operating terminal 200 (S510).

The main controller 420 of the display control panel 400 performs a frequency sampling step on a video file to which security is applied among the video files received by the display PC 410 (S520).

In step S520, frequency sampling is not applied to a video file to which security is not applied.

More specifically, the main controller 420 separates video and audio through a decoder for a video file secured through FIG. 7A as shown in FIG. 7, and then OP-AMP for inaudible frequencies through FIG. 7B. After amplification in the AD conversion process.

At this time, the main controller 420 is illustrated as extracting sound sources only for left and right channels when extracting sound sources by separating them from images from a video file, but is not limited thereto, and a plurality of sound source channels including a woofer channel of mid-low sound You can also extract the sound source.

The main controller 420 performs a step of reading out which sound range or which frequency band the sound source for each channel separated and extracted from the image is in an inaudible frequency band and how the sequence is temporally (S530).

The main controller 420 compares the inaudible frequency band and sequence read in step S530 with the initially set default value stored in the security key DB to determine whether to be displayed (S540).

In other words, in a state in which the number of repetitions is specified, such as, in the case of the security key DB, the region of the inaudible frequency band is specified, and the sequence is not repeated more than a few times, the main controller 420 reads in the step S530. When the inaudible frequency band and the sequence of the sound source do not exceed the specified inaudible frequency range and the number of repetitions, respectively, the video file is determined as a security file applied by the operator, and the determination result of the main controller 420 is received. The display PC 410 performs a step of displaying the video file on the media display unit 500 including other display units such as an electric sign panel, an LED panel, and the like (S550).

At this time, if the display is possible, the display PC 410 displays the video file on the display unit and at the same time repeats step S510 of receiving the video file from the operator terminal 200.

On the other hand, the main controller 420 determines that the video file is a file arbitrarily created by someone when the inaudible frequency band and sequence of the sound source read in the step S530 are out of the specified inaudible frequency range and the number of repetitions. The display PC 410, which has received the determination result of the main controller 420, stops the display of the video file and at the same time performs a step of transmitting a state in which display is impossible to the operator (S550`).

Meanwhile, the main controller 420 may determine whether or not to display the separated sound source through code analysis of the sound source in step S540.

That is, as shown in FIG. 8, after the sampling step, the main controller 420 separates the voice into a left channel and a right channel in an inaudible frequency band, and then separates the frequency within a range of 15 to 30 KHz through a frequency filter.

The main controller 420 inputs a code of each of the left and right channels and a code of a channel merged by muxing these channels to the microprocessor.

The microprocessor of the main controller 420 displays a video file when it is determined that the codes of the left channel, the right channel, and the merge channel are all the same. Conversely, if any one code is not the same, the video file is not displayed.

For example, when the code of the left channel is `11100000` and the code of the right channel is the same as `11100000`, the microprocessor is the same as the left and right channels as the code of the merged channel to which they are muxed is `11100000`. Only then is the video file displayed.

In addition, when the code is different, that is, when the code of the left channel is '11100000' and the code of the right channel is '00011111' of the inversion code of the left channel, the microprocessor passes the inversion code through the'NOT' When the code of the merged channel merged with the channel is the same as the code of the left channel and the inverse code passed through the NOT gate, a video file may be displayed.

In the above, the technical idea of the present invention has been described with reference to the accompanying drawings, but this is illustrative of a preferred embodiment of the present invention and does not limit the present invention. In addition, it is obvious that any person of ordinary skill in the technical field to which the present invention pertains can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

100: video file providing terminal
200: operator terminal
300: Device connection hub
400: expression control panel
500: Media display section

Claims (13)

(a) creating a schedule and a story for a plurality of video files by the schedule and story creation unit of the operator terminal;
(b) determining, by a control unit of the operator terminal, whether or not security is applied among video files included in the presentation schedule and story prepared by the schedule and story creation unit;
(c) applying security to a video file displayed in an important and important time period among the plurality of video files;
(d) the control unit storing a video file to which security is not applied and a video file to which security is applied;
(e) transmitting, by a communication interface unit of the operator terminal, a video file to which security is not applied and a video file to which the security is applied to a display terminal at a remote location;
(f) receiving, by the communication interface unit, a transmission result feedback from the remote display terminal;
(g) determining, by the control unit, whether there is an abnormality by monitoring information fed back from the display unit; And
(h) If the security value of the information to be fed back and the security value transmitted to the remote location are the same, and no abnormality is found, the step after step (b) above for the video files written by the operator terminal and the presentation schedule and story. Iteratively performing a loop, and transmitting the status to the operator when the security value is different; Including,
Step (e) above
(e-1) receiving a video file from the operator terminal by the display PC of the expression control panel of the display terminal;
(e-2) performing, by the main controller of the display control panel, frequency sampling on the video file received in step (e-1);
(e-3) reading, by the main controller, which sound bands in the inaudible frequency band for the left and right channels of the sound source separated through frequency sampling in step (e-2) and how the sequence is temporally;
(e-4) determining whether to display the main controller by comparing the inaudible frequency band and sequence read in step (e-3) with a default value initially set in the security key DB; And
(e-5) When the main controller determines that the video file can be expressed if the inaudible frequency band and sequence of the sound source read in step (e-3) do not exceed the specified inaudible frequency range and the number of repetitions, respectively, Including; and the step of expressing to the media display unit through the display PC,
In step (e-4) above
The main controller inputs the code of each of the left and right channels and the code of the channel merged by muxing these channels into the microprocessor, and then the code of the left channel, the right channel, and the merge channel is the same by the microprocessor. If it is determined that the video file is displayed, on the contrary, if either code is not the same, the video file is not displayed.
The main controller is
For an arbitrary left channel code, the code of the merged channel merged with the left channel after passing the right channel code obtained by inverting the corresponding left channel code is passed through the `NOT` category. In the same case, the video file is displayed for enhanced security of a digital video file.
The method of claim 1,
In the step (h), the operator stops transmitting the video image to the display terminal at the remote location in the step (e) through the control. The method for enhancing security of a digital video file further comprises.
delete The method of claim 1,
In the step (e-5), the display PC displays the video file on the display unit and at the same time repeats the step (e-1) of receiving the video file from the operator terminal. Security enhancement display method.
The method of claim 4,
(e-5)` The main controller is a video file through the PC for display when the inaudible frequency band and sequence of the sound source read in step (e-3) are out of the specified inaudible frequency range and the number of repetitions, respectively. Stopping the display of the display and simultaneously transmitting a state in which the display is impossible to the operator; a method for enhancing security of a digital video file comprising a.
delete The method of claim 1,
The main controller is
When the code of the left channel and the code of the right channel are the same, the video file is displayed only when the code of the merged channel in which they are muxed is the same. delete delete delete delete delete delete

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